/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.kaaproject.kaa.server.admin.client.mvp.data;

import static org.kaaproject.kaa.server.admin.shared.util.Utils.isEmpty;

import com.google.gwt.user.client.rpc.AsyncCallback;

import org.kaaproject.avro.ui.gwt.client.widget.grid.AbstractGrid;
import org.kaaproject.kaa.common.dto.TopicDto;
import org.kaaproject.kaa.server.admin.client.KaaAdmin;
import org.kaaproject.kaa.server.admin.client.mvp.activity.grid.AbstractDataProvider;
import org.kaaproject.kaa.server.admin.client.util.HasErrorMessage;

import java.util.List;

public class TopicsDataProvider extends AbstractDataProvider<TopicDto, String> {

  private String applicationId;
  private String endpointGroupId;

  /**
   * Instantiates a new TopicsDataProvider.
   */
  public TopicsDataProvider(AbstractGrid<TopicDto, String> dataGrid,
                            HasErrorMessage hasErrorMessage,
                            String applicationId, String endpointGroupId) {
    super(dataGrid, hasErrorMessage, false);
    this.applicationId = applicationId;
    this.endpointGroupId = endpointGroupId;
    addDataDisplay();
  }

  @Override
  protected void loadData(final LoadCallback callback) {
    if (!isEmpty(applicationId)) {
      KaaAdmin.getDataSource().loadTopics(applicationId, new AsyncCallback<List<TopicDto>>() {
        @Override
        public void onFailure(Throwable caught) {
          callback.onFailure(caught);

        }

        @Override
        public void onSuccess(List<TopicDto> result) {
          callback.onSuccess(result);
        }
      });
    } else if (!isEmpty(endpointGroupId)) {
      KaaAdmin.getDataSource().loadTopicsByEndpointGroupId(
          endpointGroupId, new AsyncCallback<List<TopicDto>>() {
            @Override
            public void onFailure(Throwable caught) {
              callback.onFailure(caught);

            }

            @Override
            public void onSuccess(List<TopicDto> result) {
              callback.onSuccess(result);
            }
          });
    }
  }

}
